Name: Rotax OM-912
Brand: Rotax
Rating: 4 (1 reviews)

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Effectivity: 912 Serie

Edition 4 / Rev. 0

BRP-Rotax Page 4-7

November 01/2016

Engine idles rough after warm-up period, smoky exhaust

emission.

Possible cause Remedy

Starting carb (Choke)

activated.

Close starting carb (Choke).

Oil pressure

Low oil pressure

Possible cause Remedy

Not enough oil in oil tank. Refill oil.

Too hot oil. Cool down oil.

High oil pressure

Possible cause Remedy

Too cold oil Cover oil cooler or install thermostat.

Wrong viscosity of oil Change oil to lower viscosity.

Oil level

Oil level is increasing

Possible cause Remedy

Oil too cold during engine

operation.

Cover oil cooler surface, maintain the

oil temperature prescribed.

Contamination with diesel

fuel.

Check fuel.

Table of Content3
Introduction5
List of Effective Pages7
Table of Amendments9
Summary of Amendments10
Table of Contents11
General Note11
General12
Engine Serial Number12
Abbreviations and Terms13
- Measurement17
- Symbols Used17
Safety17
- Training19
- Use for Intended Purpose19
Safety Information19
- Instrumentation20
- Engine Log Book20
- Maintenance20
- Regulations20
- Vacuum Pump21
- Technical Documentation22
- Status22
Standard Version24
Auxiliary Equipment (Optional)24
Type Description26
- Side View27
- Top View27
Engine Components, Engine Views, Cylinder Designation27
Front View28
Technical Data28
Fuel Consumption28
Normal Direction of Propeller Rotation (Engine)29
Direction of Rotation29
- Operating Instructions31
- Oil Pressure32
- Operating Limits (912 A/F/UL)32
  - Performance32
  - Speed32
  - Coolant Temperature: (Coolant Exit Temperature)33
  - Cylinder Head Temperature33
  - Exhaust Gas Temperature33
  - Waterless Coolant33
  - Fuel Pressure34
  - Power Consumption of the External Alternator34
  - Power Consumption of the Hydraulic Propeller Governor34
  - Power Consumption of the Vacuum Pump34
  - Acceleration35
  - Oil Temperature35
- Operating Limits (912 S/ULS)35
- Operating Media-Coolant38
  - Antiknock Properties39
  - Avgas39
  - Mogas39
  - Operating Media – Fuel39
  - Oil Consumption40
  - Oil Type40
  - Oil Viscosity40
- Operating Media-Lubricants40
  - Temperature Range41
  - Standard Operation43
  - Coolant Level44
- Daily Checks44
  - Expansion Tank45
  - Overflow Bottle45
  - Carburetor46
  - Exhaust System46
  - Gear Box46
  - Mech./Electronic Components46
- Before Engine Start47
  - Oil Level47
  - Pre-Flight Check47
- Engine Start48
- To Observe49
- After Engine Start50
  - Ignition Check50
  - Throttle Response50
  - Warming up50
  - Climb51
- Cruising51
- Take-Off51
- Cold Weather Operation52
- Engine Shut-Off52
  - Remedy - Cold Start52
  - Abnormal Operation55
- Exceeding Max. Admissible Engine Speed57
- Exceeding of Max. Admissible Cooling System Temperature57
- Exceeding of Max. Admissible Cyl. Head Temperature57
- Re-Start During Flight57
- Exceeding of Max. Admissible Coolant Temperature58
- Exceeding of Max. Admissible Oil Temperature58
- Oil Pressure/Fuel Pressure58
- Engine on Fire or Fire in the Engine Compartment59
- Oil Pressure above Permitted Range at Low Ambient59
- Oil Pressure below Minimum - on Ground59
- Temperatures59
- Trouble Shooting60
- Engine Keeps Running with Ignition off60
- Starting Problems60
- Engine Does Not Start60
- Low Oil Pressure61
- High Oil Pressure61
- Oil Level Is Increasing61
- Cold Engine Start62
- Engine Hard to Start at Low Temperature62
- Performance and Fuel Consumption63
- Performance Data64
- Performance Graphs for Stand. Conditions (ISA)64
- Performance Graphs 912 A/F/UL64
- Values Along Propeller Curve64
- Performance Data for Variable Pitch Propeller65
- Performance Data Variable Pitch Propeller65
- Performance Graphs for Standard. Conditions (ISA)67
- Performance Graphs Engine 912 S/ULS67
- Performance Graph for Non Standard Conditions69
- Performance Graph69
- Weights71
- Weights – Engine71
- Weight – Accessories71
- System Description73
- Cooling System74
- Coolant Flow74
- Coolant Temperature Measuring74
- Fuel System76
- Return Line76
- Oil Temperature Sensor77
- Crankcase77
- Lubrication System77
- Electric System78
- Charging Coils78
- Ignition Circuit78
- Propeller Gearbox79
- Reduction Ratio79
- Overload Clutch79
- Torsional Shock Absorber80
- Backlash80
- Vacuum Pump or Hydraulic Governor80
- Preservation and Storage81
- Engine Preservation and Storage82
- Engine Back to Operation83
- Supplement85
- List of Figures89

Rotax OM-912 User Manual

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Brand	Rotax
Model	OM-912
Category	Engine
Language	English